Freescale Semiconductor,inc.

Nxp Usa, Inc.

Wen Shi Koh

Ly Hoon Khoo

Wai Yew Lo

Chee Seng Foong

Kai Yun Yow

Kong Bee Tiu

Seng Kiong Teng

Ruzaini B Ibrahim

Zi Song Poh

A universal substrate for assembling ball grid array (BGA) type integrated circuit packages has a non-conducting matrix, an array of conducting vias extending between top and bottom surfaces of the matrix, and one or more instances of each of two or more different types of fiducial pairs on the top surface of the matrix. Each instance of each different fiducial pair indicates a location of a different via sub-array of the substrate for a different BGA package of a particular package size. The same substrate can be used to assemble BGA packages of different size, thereby avoiding having to design a different substrate for each different BGA package size.

Universal BGA substrate

A semiconductor device includes a lead frame, and an integrated circuit die. The lead frame has a flag for supporting the die and leads that surround that flag and die. The lead frame also has ground ring that surrounds the flag and die. First bond wires electrically connect the die to the lead frame leads. An insulating layer is disposed on the ground ring, and a power layer is disposed on the insulating layer. The semiconductor device further includes second bond wires that connect the die to the ground ring and third bond wires that connect the die to the power layer.

Semiconductor device with combined power and ground ring structure

A lead frame includes a lead formed of a conductive material and having first and second ends, opposing first and second main surfaces, and opposing first and second side surfaces each extending between the first and second main surfaces. A polymeric layer is formed at least on the first main surface and the first and second side surfaces of the lead at least proximate the second end of the lead. An opening in the polymeric layer on the first main surface of the lead proximate the second end is provided for connecting the lead to, for example, a semiconductor die via a bond wire.

Coated lead frame bond finger

A surface mount semiconductor device has a semiconductor die encapsulated in a molding compound. Electrical contact elements of an intermediate set are disposed on the molding compound. A set of coated wires electrically connect bonding pads of the semiconductor die and the electrical contact elements of the intermediate set. A layer of insulating material covers the coated wires, the die and the electrical contact elements of the intermediate set. Electrically conductive elements are exposed at an external surface of the layer of insulating material and contact respective electrical contact elements of the intermediate set through the layer of insulating material.

Growing community of inventors

Petaling Jaya, Malaysia

Wen Shi Koh